* bug#8333: 24.0.50; Performace regression from r100619 try_scrolling change
@ 2011-03-23 21:39 Chong Yidong
2011-03-23 23:50 ` Juanma Barranquero
2011-03-24 4:04 ` Eli Zaretskii
0 siblings, 2 replies; 4+ messages in thread
From: Chong Yidong @ 2011-03-23 21:39 UTC (permalink / raw)
To: 8333
2010-06-19 Eli Zaretskii <eliz@gnu.org>
* xdisp.c (try_scrolling): Compute the limit for searching point
in forward scroll from scroll_max, instead of an arbitrary limit
of 10 screen lines. See
http://lists.gnu.org/archive/html/emacs-devel/2010-06/msg00766.html
and
http://lists.gnu.org/archive/html/emacs-devel/2010-06/msg00773.html
for details.
This change (on trunk) causes a big slowdown in navigating large
buffers. To reproduce, make a .emacs with just the following line:
(setq scroll-conservatively 1000)
Then:
emacs /path/to/xdisp.c
M-g M-g 20000 RET
Emacs takes about a second to move point to the specified line. If the
above change is reverted, moving is instantaneous. The slowdown is much
more apparent if Emacs is compiled without optimizations.
In GNU Emacs 24.0.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.1)
of 2011-03-23 on furball
Windowing system distributor `The X.Org Foundation', version 11.0.10706000
configured using `configure 'CC=gcc' 'CFLAGS=-g''
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#8333: 24.0.50; Performace regression from r100619 try_scrolling change
2011-03-23 21:39 bug#8333: 24.0.50; Performace regression from r100619 try_scrolling change Chong Yidong
@ 2011-03-23 23:50 ` Juanma Barranquero
2011-03-24 0:01 ` Chong Yidong
2011-03-24 4:04 ` Eli Zaretskii
1 sibling, 1 reply; 4+ messages in thread
From: Juanma Barranquero @ 2011-03-23 23:50 UTC (permalink / raw)
To: Chong Yidong; +Cc: 8333
On Wed, Mar 23, 2011 at 22:39, Chong Yidong <cyd@stupidchicken.com> wrote:
> This change (on trunk) causes a big slowdown in navigating large
> buffers. To reproduce, make a .emacs with just the following line:
>
> (setq scroll-conservatively 1000)
>
> Then:
>
> emacs /path/to/xdisp.c
> M-g M-g 20000 RET
Isn't this bug#6671?
Juanma
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#8333: 24.0.50; Performace regression from r100619 try_scrolling change
2011-03-23 23:50 ` Juanma Barranquero
@ 2011-03-24 0:01 ` Chong Yidong
0 siblings, 0 replies; 4+ messages in thread
From: Chong Yidong @ 2011-03-24 0:01 UTC (permalink / raw)
To: Juanma Barranquero; +Cc: 8333
Juanma Barranquero <lekktu@gmail.com> writes:
>> (setq scroll-conservatively 1000)
>>
>> Then:
>>
>> emacs /path/to/xdisp.c
>> M-g M-g 20000 RET
>
> Isn't this bug#6671?
My mistake. I forgot there was a bug already filed.
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#8333: 24.0.50; Performace regression from r100619 try_scrolling change
2011-03-23 21:39 bug#8333: 24.0.50; Performace regression from r100619 try_scrolling change Chong Yidong
2011-03-23 23:50 ` Juanma Barranquero
@ 2011-03-24 4:04 ` Eli Zaretskii
1 sibling, 0 replies; 4+ messages in thread
From: Eli Zaretskii @ 2011-03-24 4:04 UTC (permalink / raw)
To: Chong Yidong; +Cc: bug-gnu-emacs
> From: Chong Yidong <cyd@stupidchicken.com>
> Cc: Eli Zaretskii <eliz@gnu.org>
> Date: Wed, 23 Mar 2011 17:39:37 -0400
>
> 2010-06-19 Eli Zaretskii <eliz@gnu.org>
>
> * xdisp.c (try_scrolling): Compute the limit for searching point
> in forward scroll from scroll_max, instead of an arbitrary limit
> of 10 screen lines. See
> http://lists.gnu.org/archive/html/emacs-devel/2010-06/msg00766.html
> and
> http://lists.gnu.org/archive/html/emacs-devel/2010-06/msg00773.html
> for details.
>
> This change (on trunk) causes a big slowdown in navigating large
> buffers.
Yes, this is bug#6671. It's on my todo.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-03-24 4:04 UTC | newest]
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2011-03-23 21:39 bug#8333: 24.0.50; Performace regression from r100619 try_scrolling change Chong Yidong
2011-03-23 23:50 ` Juanma Barranquero
2011-03-24 0:01 ` Chong Yidong
2011-03-24 4:04 ` Eli Zaretskii
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